The OpenD Programming Language

MeasurableFont

Interface with the common functionality for font measurements between OperatingSystemFont and DrawableFont.

interface MeasurableFont {

alias fnum = float;

bool isMonospace();

fnum averageWidth();

fnum height();

fnum ascent();

fnum descent();

fnum stringWidth(const(char)[] s, SimpleWindow window);

}

Members

Aliases

fnum alias fnum = float

Functions

ascent fnum ascent(): The maximum ascent of a glyph above the baseline.
averageWidth fnum averageWidth(): The average width of glyphs in the font, traditionally equal to the width of the lowercase x. Can be used to estimate bounding boxes, especially if the font isMonospace.
descent fnum descent(): The maximum descent of a glyph below the baseline. For example, how low the g might go.
height fnum height(): The height of the bounding box of a line.
isMonospace bool isMonospace(): Returns true if it is a monospace font, meaning each of the glyphs (at least the ascii characters) have matching width and no kerning, so you can determine the display width of some strings by simply multiplying the string width by averageWidth.
stringWidth fnum stringWidth(const(char)[] s, SimpleWindow window): The display width of the given string, and if you provide a window, it will use it to make the pixel count on screen more accurate too, but this shouldn't generally be necessary.

Meta

Source

See Implementation

History

Added October 24, 2022. The methods were already on OperatingSystemFont before that.

arsd simpledisplay aliases

Resizeability

classes

enums

functions

interfaces

mixin templates

properties

static variables

structs

variables